adding taxi way to sector file

Hi , My name Mohammed I am trying to update sector file for IVAC ,
I am finish every thing and i want to add the taxiway into sector file
for example A1 , A4 , W , W2 and so on.
if there anyone can help me and explane how to add it ?

Also , how to add the
[Low Airway]
[High Airway] , and from where can i get it i want for Muscat Int Airport (OOMS)

Thank you